Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 11 5.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 11/06/2021   16:31:50   ( -70.51, 111.81) 11/06/2021   16:33:01  ( -70.50, 111.81)    0.92                71
 11/06/2021   17:22:34   (  70.43, -80.74) 11/06/2021   17:22:28  (  70.40, -80.69)    3.12                 6
 11/06/2021   18:13:12   ( -70.15,  87.01) 11/06/2021   18:11:59  ( -70.23,  86.69)   14.85                73
 11/09/2021   08:48:12   ( -70.78,-132.68) 11/09/2021   08:49:24  ( -70.68,-132.05)   25.92                72
 11/09/2021   09:38:50   (  70.39,  35.27) 11/09/2021   09:38:54  (  70.41,  35.20)    3.51                 4
 11/09/2021   10:29:32   ( -70.32,-157.30) 11/09/2021   10:28:24  ( -70.30,-157.34)    2.99                68
 11/12/2021   01:04:35   ( -71.11, -17.28) 11/12/2021   01:05:44  ( -71.00, -15.68)   59.07                69
 11/12/2021   01:55:08   (  70.47, 151.10) 11/12/2021   01:55:19  (  70.46, 151.15)    1.67                11
 11/12/2021   02:45:49   ( -70.33, -41.37) 11/12/2021   02:44:49  ( -70.35, -41.38)    1.57                60
 11/14/2021   17:20:58   ( -71.44,  98.09) 11/14/2021   17:22:04  ( -71.31, 100.69)   93.35                66
 11/14/2021   18:11:25   (  70.49, -92.98) 11/14/2021   18:11:44  (  70.50, -92.92)    2.42                19
 11/14/2021   19:02:06   ( -70.35,  74.55) 11/14/2021   19:01:14  ( -70.39,  74.55)    3.60                52
 11/17/2021   10:27:41   (  70.52,  22.92) 11/17/2021   10:28:08  (  70.52,  23.00)    2.89                27
 11/17/2021   11:18:22   ( -70.38,-169.53) 11/17/2021   11:17:39  ( -70.36,-169.61)    3.63                43